On some of my blog posts, adsense doesnt display any ads. I think this must be because the post doesnt have any density of keywords. I still think it is weird that adsense cant just read from the entire blog instead, but it seems thats not going to happen. So how can I make Adsense display ads? Should I change the title? Can I use META descritions? Are tags important?
If you place code correctly ads will appear. if there si post there will be ad. and based on your title ad differs so place nice title. meta description and keywords also help to place good ads. title help us to find our articles in search engines.